94 gmc sierra 305 wants to quit goin down the road and it doesn't have much power until u hive it a good amount of gas, when it wants to quit the lights flicker

Asked by Jan 13, 2014 at 10:32 AM about the 1994 GMC Sierra 1500 K1500 SLE 4WD Extended Cab SB

Question type: Maintenance & Repair

I just changed fuel filter and pump was
supposedly just put in, the vapor canister
line broke need to fix

2 Answers

11,465

Altenator? Lights should not flicker. Check the Battery voltage. Check the battery voltage with the engine running. The differance is how much your altenator is putting out. Battery should be around 12. Running you should be close to 14 or higher. Best option is to load test in both conditions, I use a 100 amp carbon pile battery tester, finds most issues. If the volts look good back to the fuel. Check the fuel pressure, if it's low check the fuel regulator (built into the back of the throttle body). It can be taken apart and check and usually cleaned and re-assembled without a new gaskets. If you have the quick connect fuel lines you may need the disconnect tools (cheap) if they're hex use line wrenches on them. Jegs has upgrade parts for the reg, rock auto has kits. It's usually just dirty thoough. Good Luck.

Best Answer Mark helpful

I'll definitely check both I appreciate the help

Your Answer

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,590
  • #2
    John Saffrahn
    Reputation
    3,860
  • #3
    Glenn Clingenpeel
    Reputation
    3,670
View All

Related Models For Sale

Used Ford F-150
2,344 Great Deals out of 215,477 listings starting at $1,300
Used Dodge Ram 1500
316 Great Deals out of 9,549 listings starting at $800
Used Toyota Tacoma
439 Great Deals out of 44,078 listings starting at $1,995
Used GMC Yukon
311 Great Deals out of 19,755 listings starting at $1,400
Used Chevrolet Tahoe
528 Great Deals out of 36,655 listings starting at $1,375
Used Chevrolet Camaro
224 Great Deals out of 28,922 listings starting at $3,900
Used GMC Sierra 2500
3 Great Deals out of 161 listings starting at $4,800

Used Cars For Sale

2018 GMC Sierra 1500 For Sale
16 Great Deals out of 31,262 listings starting at $23,873
2017 GMC Sierra 1500 For Sale
71 Great Deals out of 5,368 listings starting at $19,900
2016 GMC Sierra 1500 For Sale
61 Great Deals out of 2,877 listings starting at $16,422
2015 GMC Sierra 1500 For Sale
89 Great Deals out of 4,731 listings starting at $12,900
2014 GMC Sierra 1500 For Sale
91 Great Deals out of 3,187 listings starting at $13,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.